From 36cff5a10c6b003fa2d0464848d5664b2bf723e0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Linus=20L=C3=BCssing?= <linus.luessing@web.de>
Date: Thu, 17 Feb 2011 08:17:51 +0000
Subject: bridge: Fix MLD queries' ethernet source address
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Map the IPv6 header's destination multicast address to an ethernet
source address instead of the MLD queries multicast address.

For instance for a general MLD query (multicast address in the MLD query
set to ::), this would wrongly be mapped to 33:33:00:00:00:00, although
an MLD queries destination MAC should always be 33:33:00:00:00:01 which
matches the IPv6 header's multicast destination ff02::1.

Signed-off-by: Linus Lüssing <linus.luessing@web.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 net/bridge/br_multicast.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'net/bridge/br_multicast.c')

diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index 1207a5a..c1f24e4 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -434,7 +434,6 @@ static struct sk_buff *br_ip6_multicast_alloc_query(struct net_bridge *br,
 	eth = eth_hdr(skb);
 
 	memcpy(eth->h_source, br->dev->dev_addr, 6);
-	ipv6_eth_mc_map(group, eth->h_dest);
 	eth->h_proto = htons(ETH_P_IPV6);
 	skb_put(skb, sizeof(*eth));
 
@@ -448,6 +447,7 @@ static struct sk_buff *br_ip6_multicast_alloc_query(struct net_bridge *br,
 	ip6h->hop_limit = 1;
 	ipv6_addr_set(&ip6h->saddr, 0, 0, 0, 0);
 	ipv6_addr_set(&ip6h->daddr, htonl(0xff020000), 0, 0, htonl(1));
+	ipv6_eth_mc_map(&ip6h->daddr, eth->h_dest);
 
 	hopopt = (u8 *)(ip6h + 1);
 	hopopt[0] = IPPROTO_ICMPV6;		/* next hdr */
-- 
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